Joe and Jon,

I think that the very weakness of Wiki is also its strength. For those “trolls” that want to sabotage an entry, their incentive is to apply humor and misinformation to show to others that they’ve manipulated the system.

For those of us who use Wiki as a source of information, our incentive is to add our own expertise to the entry, thereby garnering our own notoriety. Just like the “troll” — though by an entirely different motivator — we have a desire to add our own knowledge to the system as a whole, thereby contributing a part of us to the greater system.

Therefore, we don’t need to necessarily know if where the information comes from, as long as we have a belief that the underlying human desire to be a part of the whole is a motivator, and that there are inherently more “good” people in the world than “bad”.